Car-bolster.



No. 700,402. Patented May 20, |902.

W. P. BETTENDOBF.

CAB BOLSTEB (Application led N0v.25, 1 901.)

l 2 Shets-Sheet l.

(No Model.)

Patented May 20, |902.

No. 700,402. Aw. P. BETTENIDORF.

cA BoLsTEn.

{Applicaticn filed Nov..25, 1901.1

' (nu Model.) 2 sheets-snm ,2.

UNITED STATES I PATENT OFFICE.

WILLIAM P. BETTENDORF, OF DAVENPORT, IOWA.

CARBOILSTER.

SPECIFICATION forming part of Letters Patent No. 700,402, dated May 20,1902. Applicationlgarovenber 25,1901; serian. 83,610. cromada.)

To all whom it maycounem:

Be it known that I, WILLIAM P. BETTEN- DORE, a citizen of therUnitedStates, and a3 resident of Davenport, in the county of ,Scott and Stateof Iowa, haveinvented certain new? and useful Improvements in Bolstersfor Cars, of which the following is afull, clear, and ex-t in Fig. l theside edges of theend portion are act specification.

The object of my invention is to providea tubular bolster for cars, thebody of which is made of one piece of metal suitably pressedf into shapeand combining in a veryeconom=` ical form of structure both durability.and? This I accomplish by the p meansE hereinafterm fully described andas particu-5 lightness.

larly pointed out in the claims.

plan view of a bolster, one half the; length thereof illustrating onestyle of bolster and the other half another stylefthereof. Fig. 3 is aside view ofthe same. Fig. 4 is a longitudinal section therethrough,showing the ends thereof supported by one style of springs at one endandanother style at the other end. Q Fig. 5 is a view of the right-handend of -thev bolster. Fig. 6 is a crosssection takenv onv g; cured inplace in the usual-manner. A represeutsthel dotted line 6 6, Fig. 4.

Referring to the drawings, blank from which my invention'is formed.

The left-hand end portion of the blank shown'g in Fig. l comprises asheet-metal plate the-` length of which corresponds to the length of thecompleted bolster and the width twice that of the completed bolster plustwice the depth of the sides thereof. The style of the bolster shown inthe drawings has a truss shape that is, its upper side is, barring thecentral bearing-plate and the side bearings, all on the same plane fromend toend, and its depth is greatest at its center of length andinclines upward from its center toward its ends, where its upper andlowersides are: parallelfor 4al short distanceto provide a horizontalbear` ing forthe upper spring-plate. The-blank,

therefore, is widest at its center of length a, and its side edges b,extending from the said y center of length toward the ends of saidblank, converge toward each other at a correspond- Fig. 2 isa durable.

l.ing angle until the portions of the ends c of vv.the blank are reachedwhich are tobe formed .into the end portions ,of the 4vbolster havingrparallel upper and lower sides, vwhereupon lsaidside edges extendparallel to each otherA lfor the remainder of their length.

In the right-hand portion of the' blank shown provided withcorresponding laterally-projecting ears d diinstead of being parallel toveach other,` as hereinbefore described. n

In forming the bolster B (shown inthe left hand portionoftheseveraljigures of the drawings) the blankis pressed so .thatf-theA,width of the bolster, is thesame throughout Vits'entire-1engthand itsdepth is astherein` before specified.; lHeretoforel thecentrallyvlocated bearing-plate of the bolster consisted of a separatecasting or pressed-metal plate secured by rivets'or boltsin position,and

thiswas likewise the case with regard to the side bearings andtheguideeplates. In my in- .vention the central bearingfplate C ispressed into shape out of material ofthe blank dur- ,in g the operationof converting the blank into the bolster, and so likewise are the sidebear- .ings DD and the guideplates E E. The bolster may be formed witheitheror all of these integral accessories omitted, however, and saidparts may be separately made and se When the blankv has been pressedvinto shape, the longitudinal side edges of said blank are broughttogether and welded or otherwise -united together.

I prefer tol'have saidedges meet ata plane midway between its sides; butof course they could be brought together at some other point and` answersubstantially as well. When the edges of the blank are thus broughttogether, a' tubular bolsteris formed, 'which is less in weight than anybolsterknownto me andis both strong and The form of bolster shown in theright-hand mer, except as regards the construction of the ends of thebolster. The bolster is formed so that the cars d d of the blankwillextend' downward from either side of the ends,r of the 1 bolsterparallel to each other and in the same planes as the longitudinal sidesof said bolster to form retaining walls or shields k 7a, between whichthe peculiar roller trucksprings K (shown in Fig. 4 of the drawings) canbe placed. In order to provide a bearing for the upper end of thesprings K, I employ an end plate I, which is of suitable oblongproportions and has one end secured to the under side ot' the bolster ata point back of the shields about where it commences to inclinedownward. From this point the said plate extends between said shields,to which its side edges are suitably secured, it' desired, to the end ofthe bolster, and then extends upward to and laps over and is secured tothe upper surface of said bolster,substantially as shown. Other meansfor providing a bearing for said springs K may be provided, however, ifdesired.

What I claim as new isdl. A tubular bolster, consisting of one piece ofsheet metal the longitudinal edges ot' which are united together.

2. A car-bolster comprising astructure tubular throughout its entirelength, consisting of one piece of sheet metal the longitudinal edges ofwhich abut and are united together.

3. A car bolster comprising a structure made of a single plate of sheetmetal, tubular throughout its entire length, the longitudinal edges ofwh-ich are united together.

4. A ear-bolster comprising a truss-shape structure, tubular throughoutits entire length, consisting of a single piece ofi' sheet metal thelongitudinal edges of which abut and are united together.

5. A car-bolster comprising a structure, tubular throughout its entirelength, consisting of a single piece of sheet metal the longitudinaledges ot' which are broughtin contact and united together and having thecentral bearing-plate thereof made integral therewith.

G. A car-bolster comprising a structure made ot asingle plate of sheetmetal the longitudinal edges of which are brought in contact and unitedtogetherand tubular throughout its entire length, and having a centralbearing-plate pressed from and made integral therewith.

7. A car-bolster comprising a structure, tubular throughout its entirelength consisting of a single piece of sheet metal the longitudinaledges of which are brought in contact and united together and having theside bearings made integral therewith.

8. A car bolster comprising a structure made of a single plate of sheetmetal the 1ongitudinal edges of which are brought in contact and unitedtogether and tubular throughout its entire length, and having side bearings pressed from and made integral therewith.

9. A car-bolster comprising a structure, tubular throughout its entirelength consisting of a single plate ot' sheet metal the longitudinaledges ot' which are brought in contact and united together and havingthe truck-column guides thereof made integral therewith.

10. A car-bolster comprising a structure made of a single plate of sheetmetal, the longitudinal edges of which are brought in contact and unitedtogether and tubular throughout its entire length, and having atruckcolumn guide pressed from and made integral therewith.

1l. Acar-bolstercompiisinga structure tubular throughout its entirelength, consisting of a single plate of sheet metal having the longitudinal edges thereof brought in contact and united together andhaving the central bearing plate, the side bearings, and thetruck-column guides thereof made integral therewith. l

l2. A car-bolster comprising a structure made of a single plate ot'sheet metal, the longitudinal edges ot which are brought in contact andsecured together and tubular throughout its entire length, and having acentral bearing-plate,side bearings and truckcolumn guides pressed fromand made integral therewith.

13. A car-bolster comprising a truss-shapestructure,tubularthroughoutits entire length consisting of a singleplate ot' sheet metal the longitudinal edges of which are brought incontact and united together and having the central bearing-plate theside bearings, and the truck-column guides thereof made integraltherewith.

14. A car-bolster comprising a truss-shape structure, made of a singleplate of sheet metal the longitudinal edges of which are brought incontact and united together and tubular throughout its entire length,and having a central bearing-plate, side bearings,and truck-columnguides pressed from and made integral therewith.

IVILLIAM P. BETTENDORF.

Witnesses:

HENRY BELLINGHAUSEN, W. I-I. FoRREsT.

IOO

